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Re: [Qemu-devel] [PATCH] Softfloat: Add support to softfloat to return f
From: |
Christophe Lyon |
Subject: |
Re: [Qemu-devel] [PATCH] Softfloat: Add support to softfloat to return floatxx_default_nan when the corresponding target status flag is set. |
Date: |
Mon, 7 Feb 2011 11:17:01 +0100 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.13) Gecko/20101207 Lightning/1.0b2 Thunderbird/3.1.7 |
On 04.02.2011 20:47, Aurelien Jarno wrote:
> On Fri, Feb 04, 2011 at 02:44:48PM +0000, Peter Maydell wrote:
>> On 4 February 2011 14:01, Christophe Lyon <address@hidden> wrote:
>>
>> The target-specific #ifdef is pretty ugly.
I wanted to be safe (not breaking other targets), and as there are already some
#ifdef in the same file, it seemed acceptable ;-)
>
> I confirm that the same bug is present on SH4 (tested on real hardware),
> so the same fix is needed there. Thanks for catching that. Can you
> please resend your patch without the #ifdef?
>
OK
>> (cc'ing Aurelien to check since he's the SH4 maintainer.)
>>
>> I also think the change is simple enough that we ought to do
>> it consistently for the floatx80 and float128 functions even if
>> neither ARM nor sh4 use them.
>>
>
> Agreed.
>
OK.
I was also wondering about the float16 case? The ARM ARM describes it uses
default_nan too, but I couldn't find that right piece of code to patch in
softfloat. Any idea? It seems to behave a bit differently from other FP formats.
Christophe.